• Journal of Agricultural Extension & Community Development
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• v.13 no.1
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• pp.123-134
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• 2006

The purpose of this study was to establish the effective model for community-centered youth development in Korea. The research methods used the extensive review of related literatures and consultation with a panel of experts in this field. Based on the major results, the implications and suggestions were as follows. First, community youth development will need to provide the opportunities of competencies and a full complement of positive connections to youth activities. Second, communities promote to engage youth as partners with adults in the process of positive youth development. Third, youth development organizations operate to support the programs to prevent or treat specific problems in terms of community youth contexts. Finally, collaboration and network are necessarily required among youth, adults, home, school, organizations within the community.

• Journal of Microbiology and Biotechnology
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• v.27 no.4
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• pp.649-659
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• 2017

Extremophilic microorganisms have established a diversity of molecular strategies in order to survive in extreme conditions. Biocatalysts isolated by these organisms are termed extremozymes, and possess extraordinary properties of salt allowance, thermostability, and cold adaptivity. Extremozymes are very resistant to extreme conditions owing to their great solidity, and they pose new opportunities for biocatalysis and biotransformations, as well as for the development of the economy and new line of research, through their application. Thermophilic proteins, piezophilic proteins, acidophilic proteins, and halophilic proteins have been studied during the last few years. Amylases, proteases, lipases, pullulanases, cellulases, chitinases, xylanases, pectinases, isomerases, esterases, and dehydrogenases have great potential application for biotechnology, such as in agricultural, chemical, biomedical, and biotechnological processes. The study of extremozymes and their main applications have emerged during recent years.

• Culinary science and hospitality research
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• v.12 no.1 s.28
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• pp.22-36
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• 2006

This study examines the job satisfaction of cooks of school feeding. Sampling was taken among school feeding cooks except for those of Kangwon Province and Cheju Province. The factors affecting on the job satisfaction was investigated to find ways to raise the job satisfaction of cooks of school feeding. Four factors were extracted in all. It is found that these four factors have affected the job satisfaction of cooks of school feeding in order of working satisfaction factor(.493), co-worker communication factor(.463), job environment factor(.185), and advancement factor(.146). Accordingly, more opportunities for career advancement should be offered to raise the job satisfaction among them, and the establishment of better work environment and the optimum staff are urgently needed.

• Journal of Elementary Mathematics Education in Korea
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• v.1 no.1
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• pp.1-16
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• 1997

Children should have opportunities to experience problem solving individually with strategies for developing their problem solving abilities. To make an instructional design for individual teaming, problem solving activities were classified into categories like individual activities, individual activities within a group, and team teaching. A flow of teaching and teaming process was designed before, and concrete and semi-concrete materials were used in an experimental teaching, which was analysed in this research.

• ETRI Journal
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• v.36 no.3
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• pp.502-505
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• 2014

Polarized spectrum sharing (PSS) exploits the spectrum opportunities in a polarized domain. However, when it comes to wideband environments PSS is impaired by the frequency-dependent polarization mode dispersion (PMD); thus, the effective throughput of PSS drops. To combat the PMD effect, this work proposes a cluster-based PSS approach to enable PSS on a narrower frequency span. Simulation results show that the effective throughput of PSS on cluster basis outperforms that of PSS on bandwidth and subcarrier basis.

• Research in Mathematical Education
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• v.19 no.3
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• pp.155-174
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• 2015

The goal of this study was to examine the three components of a laboratory class cycle that empowered teachers to change their teaching practices. Six teachers and their administrator in an elementary school in the southeastern United States participated in the study. All the teachers were interviewed, and their mathematics lessons were observed at the end of each cycle of laboratory classes. The study revealed how planning, observing, and critiquing mathematics lessons as a team assisted the teachers' learning and teaching. We identified opportunities for the teachers to experiment with different teaching approaches, and we found that support from the team and from the school were key factors for the laboratory class cycle to function effectively.

• Journal of the Korean Society for Nondestructive Testing
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• v.32 no.6
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• pp.696-702
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• 2012

In this study, a noncontact laser ultrasonic system is proposed for rail defect detection. An Nd-Yag pulse laser is used for generation of ultrasonic waves, and the corresponding ultrasonic responses are measured by a laser Doppler vibrometer. For the detection of rail surface damages, the shape of the excitation laser beam is transformed into a line. On the other hand, a point source laser beam is used for the inspection of defects inside a rail head. Then, the interactions of propagating ultrasonic waves with defects are examined using actual rail specimens. Amplitude attenuation was mainly observed for a surface crack, and reflections were most noticeable from an internal damage. Finally, opportunities and challenges associated with real-time rail inspection from a high-speed train are discussed.

• Journal of Agricultural Extension & Community Development
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• v.15 no.3
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• pp.417-432
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• 2008

The purpose of this study were to discuss on the importance of community youth development programs and review the enhancement of competence in youth The research methods used the extensive review of related literatures. Based on the major results, the implications and suggestions were as follows. First, community youth activity will need to provide the opportunities of enhancing the competencies and a full complement of positive connections to youth programs. Second, communities promote to engage youth as partners with adults in the process of positive youth development. Third, youth development organizations operate to support the programs to prevent risky-behaviors or treat specific problems in terms of community youth contexts. Finally, collaboration and network are necessarily required among youth, adults, family, school, organizations within the community. Changes to work and workplace are so significant that policies refer to 'the knowledge society' at the same time 'information society'. Future workers will need to have the skills of information and communications management and control.

• Macromolecular Research
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• v.17 no.4
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• pp.207-217
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• 2009

The discovery of carbon nanotubes(CNTs) has opened up exciting opportunities for the development of novel materials with desirable properties. The superior mechanical properties and excellent electrical conductivity make CNTs a good filler material for composite reinforcement. However, the dispersal of CNTs in a polymer solution or melt is difficult due to their tendency to agglomerate. Many attempts have been made to fully utilize CNTs for the reinforcement of polymeric media. Therefore, different types of polymer/CNTs nanocomposites have been synthesized and investigated. This paper reviews the current progress in the preparation, properties and application of polyamide/CNTs(nylon/CNTs) nanocomposites. The effectiveness of different processing methods has increased the dispersive properties of CNTs and the amelioration of their poor interfacial bonding. Moreover, the mechanical properties are significantly enhanced even with a small amount of CNTs. This paper also discusses how reinforcement with CNTs improves the electrical thermal and optical properties of nylon/CNTs nanocomposites.

• Journal of the Korean Institute of Landscape Architecture
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• v.34 no.6 s.119
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• pp.78-86
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• 2007

Research into the use of recreation forest accommodations, the main facilities in these forests, and user satisfaction with them has been carried out for recreation forests in the suburbs of Daegusi and Gyongsangbukdo. This study aimed at providing background material to support the increasing demand to improve the facilities of recreation forests and to educate recreation forest staff about how to provide better service. User satisfaction with recreation forests as determined through regression analysis was affected by the following factors in this order: indoor recreation, the indoor space, outdoor recreation, time satisfaction factor, and activity opportunities. The level of satisfaction is affected by the force of factors above. The order of effective offerings of accommodations is presented according to the results.